"FILE - This undated file photo shows a picture of missing 15-year-old Sierra LaMar at Burnett Elementary School in Morgan Hill, Calif. Marlene LaMar, Sierra's mother, hasn't seen her daughter since she left her home in Morgan Hill to go to school on the morning of March 16. The worried mother, who continues to express hope for the safe return of her daughter, has issued a statement describing her Mother's Day as a ""time of reflection."" Authorities believe Sierra was kidnapped while walking to a school bus stop. (AP Photo/Ben Margot, File)"
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